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  • postfix mail server and spam

    - by darko petreski
    Hi, I have a postfix mail server for our firm. The mails sent from this server to gmail and yahoo goes in spam. The postfix is configured on our server and it has never been used for spamming. Everything is configured as is should. The server works fine, the headers are as they should be. What should I do in order the messages not to go in spam ? Regards

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  • What part of a computer can you "skimp" on?

    - by Paolo Bergantino
    So I'm thinking about building myself a new rig. I want to go for value more than anything, but I also want to get myself a nice enough setup that I can play the latest games considerably well. Last time I built a computer I skimped on the power supply and it bit me big time later on. I know the ideal answer is "don't skimp on anything", but are there are any parts of a computer you can do relatively well without having a particularly "good" component?

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  • Excel 2007: what happened to the Auto Expand Selection tool?

    - by Erik Olson
    Older versions of Excel had a icon that would expand the selection to include any non-empty cells in all directions. It was an X shape with four arrowheads. You can still write VBA code to do this, but I really miss this tool. Did they just drop it from Excel 2007? In older versions you had to go get it from the Customize menu because it wasn't on any toolbar by default.

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  • Ubuntu equivalent to bugs.debian.org/<package>?

    - by jae
    In Debian, I can use the above URL to quickly see the open bugs for a package. In Ubuntu, it seems I have to go to launchpad, and click, click, click... which is . Is there a quick way to see all the bugs of a package in Ubuntu? One which doesn't require clicking through hell and back?

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  • eAccelerator settings for PHP/Centos/Apache

    - by bobbyh
    I have eAccelerator installed on a server running Wordpress using PHP/Apache on CentOS. I am occassionally getting persistent "white pages", which presumably are PHP Fatal Errors (although these errors don't appear in my error_log). These "white pages" are sprinkled here and there throughout the site. They persist until I go to my eAccelerator control.php page and clear/clean/purge my caches, which suggests to me that I've configured eAccelerator improperly. Here are my current /etc/php.ini settings: memory_limit = 128M; eaccelerator.shm_size="64", where shm.size is "the amount of shared memory eAccelerator should allocate to cache PHP scripts" (see http://eaccelerator.net/wiki/Settings) eaccelerator.shm_max="0", where shm_max is "the maximum size a user can put in shared memory with functions like eaccelerator_put ... The default value is "0" which disables the limit" eaccelerator.shm_ttl="0" - "When eAccelerator doesn't have enough free shared memory to cache a new script it will remove all scripts from shared memory cache that haven't been accessed in at least shm_ttl seconds. By default this value is set to "0" which means that eAccelerator won't try to remove any old scripts from shared memory." eaccelerator.shm_prune_period="0" - "When eAccelerator doesn't have enough free shared memory to cache a script it tries to remove old scripts if the previous try was made more then "shm_prune_period" seconds ago. Default value is "0" which means that eAccelerator won't try to remove any old script from shared memory." eaccelerator.keys = "shm_only" - "These settings control the places eAccelerator may cache user content. ... 'shm_only' cache[s] data in shared memory" On my phpinfo page, it says: memory_limit 128M Version 0.9.5.3 and Caching Enabled true On my eAccelerator control.php page, it says 64 MB of total RAM available Memory usage 77.70% (49.73MB/ 64.00MB) 27.6 MB is used by cached scripts in the PHP opcode cache (I added up the file sizes myself) 22.1 MB is used by the cache keys, which is populated by the Wordpress object cache. My questions are: Is it true that there is only 36.4 MB of room in the eAccelerator cache for total "cache keys" (64 MB of total RAM minus whatever is taken by cached scripts, which is 27.6 MB at the moment)? What happens if my app tries to write more than 22.1 MB of cache keys to the eAccelerator memory cache? Does this cause eAccelerator to go crazy, like I've seen? If I change eaccelerator.shm_max to be equal to (say) 32 MB, would that avoid this problem? Do I also need to change shm_ttl and shm_prune_period to make eAccelerator respect the MB limit set by shm_max? Thanks! :-)

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  • Sound muting program for Windows?

    - by Marta
    Sometimes when I go to sleep I leave the computer playing some music, but I'd like to tell it, once X minutes have passed just mute the volume. Does anyone know of a program to do so? I'm targeting Windows 7 here but I guess one for Vista will do equally.

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  • Modelling boost::Lockable with semaphore rather than mutex (previously titled: Unlocking a mutex fr

    - by dan
    I'm using the C++ boost::thread library, which in my case means I'm using pthreads. Officially, a mutex must be unlocked from the same thread which locks it, and I want the effect of being able to lock in one thread and then unlock in another. There are many ways to accomplish this. One possibility would be to write a new mutex class which allows this behavior. For example: class inter_thread_mutex{ bool locked; boost::mutex mx; boost::condition_variable cv; public: void lock(){ boost::unique_lock<boost::mutex> lck(mx); while(locked) cv.wait(lck); locked=true; } void unlock(){ { boost::lock_guard<boost::mutex> lck(mx); if(!locked) error(); locked=false; } cv.notify_one(); } // bool try_lock(); void error(); etc. } I should point out that the above code doesn't guarantee FIFO access, since if one thread calls lock() while another calls unlock(), this first thread may acquire the lock ahead of other threads which are waiting. (Come to think of it, the boost::thread documentation doesn't appear to make any explicit scheduling guarantees for either mutexes or condition variables). But let's just ignore that (and any other bugs) for now. My question is, if I decide to go this route, would I be able to use such a mutex as a model for the boost Lockable concept. For example, would anything go wrong if I use a boost::unique_lock< inter_thread_mutex for RAII-style access, and then pass this lock to boost::condition_variable_any.wait(), etc. On one hand I don't see why not. On the other hand, "I don't see why not" is usually a very bad way of determining whether something will work. The reason I ask is that if it turns out that I have to write wrapper classes for RAII locks and condition variables and whatever else, then I'd rather just find some other way to achieve the same effect. EDIT: The kind of behavior I want is basically as follows. I have an object, and it needs to be locked whenever it is modified. I want to lock the object from one thread, and do some work on it. Then I want to keep the object locked while I tell another worker thread to complete the work. So the first thread can go on and do something else while the worker thread finishes up. When the worker thread gets done, it unlocks the mutex. And I want the transition to be seemless so nobody else can get the mutex lock in between when thread 1 starts the work and thread 2 completes it. Something like inter_thread_mutex seems like it would work, and it would also allow the program to interact with it as if it were an ordinary mutex. So it seems like a clean solution. If there's a better solution, I'd be happy to hear that also. EDIT AGAIN: The reason I need locks to begin with is that there are multiple master threads, and the locks are there to prevent them from accessing shared objects concurrently in invalid ways. So the code already uses loop-level lock-free sequencing of operations at the master thread level. Also, in the original implementation, there were no worker threads, and the mutexes were ordinary kosher mutexes. The inter_thread_thingy came up as an optimization, primarily to improve response time. In many cases, it was sufficient to guarantee that the "first part" of operation A, occurs before the "first part" of operation B. As a dumb example, say I punch object 1 and give it a black eye. Then I tell object 1 to change it's internal structure to reflect all the tissue damage. I don't want to wait around for the tissue damage before I move on to punch object 2. However, I do want the tissue damage to occur as part of the same operation; for example, in the interim, I don't want any other thread to reconfigure the object in such a way that would make tissue damage an invalid operation. (yes, this example is imperfect in many ways, and no I'm not working on a game) So we made the change to a model where ownership of an object can be passed to a worker thread to complete an operation, and it actually works quite nicely; each master thread is able to get a lot more operations done because it doesn't need to wait for them all to complete. And, since the event sequencing at the master thread level is still loop-based, it is easy to write high-level master-thread operations, as they can be based on the assumption that an operation is complete when the corresponding function call returns. Finally, I thought it would be nice to use inter_thread mutex/semaphore thingies using RAII with boost locks to encapsulate the necessary synchronization that is required to make the whole thing work.

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  • Is the 4pin atx power plug required?

    - by rockinthesixstring
    I know the answer is probably a resounding YES, but I just wanted to double check. I just purchased a new chassis for my PC and now my 4pin cpu power plug doesn't reach. I'm wondering if the 4 pins are required for operation, or can I get by for the weekend without it until I can go get an extension?

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  • sql server textbook

    - by Nick P
    I am a student that is about to take an independent study class on SQL Server management. I would like some suggestions for textbooks that could guide me. I will be expected to install and configure SQL server 2008 in a Windows Server 2008 environment and provide tools(scripts) to administer a database for future students. I've reviewed the Murach book, and it doesn't seem to go into enough depth.

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  • How do I get the latest FastCGI and PHP versions to peacefully coexist on IIS 6?

    - by BHelman
    I have been going round and round trying to get any sort of PHP running on IIS 6. I somehow managed to successfully get version 5.1.4 running using the php5isapi.dll file. However, I want to upgrade a website to begin using a Content Management System. I have never dug into CMS before so I'm open to programs that are easy to use. I am currently looking into TomatoCMS and ImpressCMS - but that's beside the point. I have never done an installation with PHP before and I think I'm getting familiar with how it works. However the current situation is this. Microsoft's Web Platform Installer 2.0 installed FastCGI for me. I need to upgrade to PHP 5.3.1 for a CMS system. So I downloaded the Windows installer and let it go at it. After consulting several other blog articles, I believe I know how it is supposed to work but I am currently not having luck. THE SETUP *.php is a registered extension in IIS 6 for all websites (on Win 2k3). The application that it calls is C:\Windows\system32\inetsvr\fcgiext.dll, like it should. The fcgiext.ini config has the proper lines: [Types] php=PHP [PHP] ext=C:\program files\PHP\php-cgi.exe And the php.ini file also has the correct configs. All extensions are disabled and I changed the correct things for FastCGI. And everything is registered correctly with the PATH variable. Everything is exactly how it should be. BUT when I launch the "info.php" page () on another computer, I get the following error: FastCGI Error The FastCGI Handler was unable to process the request. Error Details: * Section [PHP] not found in config file. * Error Number: 1413 (0x80070585). * Error Description: Invalid index. HTTP Error 500 - Server Error. Internet Information Services (IIS) A quick Google search reveals that I have it all setup correctly as far as the INI's go and the mapping of the php extension. I am completely at a loss. Does anyone have any suggestions? Although the server is hosting three small websites, I don't really care what I have to do to it to get it to work.

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  • Best program for keeping track of Time (motor racing)

    - by Krazy_Kaos
    I need a program to control time, I need the time to go forth and back (for me to choose) and I insert the staring time. I also need a program to control lap times. If anyone know any program for these stuff (racing stuff), I would apreciate it, even if there only are paid solution, I still would like to take a look at them (I staring to make a program in python and it could be good for inspiration)

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  • Ruby erb template- try to change layout- get error

    - by nigel curruthers
    Hi there! I'm working my way through adapting a template I have been given that is basically a list of products for sale. I want to change it from a top-down list into a table layout. I want to end up with something as follows- <div id= 'ladiesproducts'> <% ladies_products = hosting_products.find_all do |product| product.name.match("ladies") end %> <table><tbody> <% [ladies_products].each do | slice | %> <tr> <% slice.each do | product | %> <td> <h4><%= product.name.html %></h4> <p><%= product.description %></p> <% other parts go here %> </td> <% end %> </tr> <% end %> </tbody></table> </div> This works fine for the layout that I am trying to achieve. The problem I have is when I paste back the <% other parts go here % part of the code. I get an internal error message on the page. I am completely new to Ruby so am just bumbling my way through this really. I have a hunch that I'm neglecting something that is probably very simple. The <% other parts go here %> code is as follows: <input type='hidden' name='base_renewal_period-<%= i %>' value="<%= product.base_renewal_period %>" /> <input type='hidden' name='quoted_unit_price-<%= i %>' value="<%= billing.price(product.unit_price) %>" /> <p><input type='radio' name='add-product' value='<%= product.specific_type.html %>:<%= i %>:base_renewal_period,quoted_unit_price,domain' /><%= billing.currency_symbol.html %><%= billing.price(product.unit_price, :use_tax_prefs) %> <% if product.base_renewal_period != 'never' %> every <%= product.unit_period.to_s_short.html %> <% end %> <% if product.setup_fee != 0 %> plus a one off fee of <%= billing.currency_symbol.html %><%= sprintf("%.2f", if billing.include_tax? then billing.price(product.setup_fee) else product.setup_fee end) %> <% end %> <% if product.has_free_products? %> <br /> includes free domains <% product.free_products_list.each do | free_product | %> <%= free_product["free_name"] %> <% end %> <% end %> * </p> <% i = i + 1 %> <% end %> <p><input type='submit' value='Add to Basket'/></p> </form> <% unless basket.nil? or basket.empty? or no_upsell? %> <p><a href='basket?add-no-product=package'>No thank you, please continue with my order ...</a></p> <% end %> <% if not billing.tax_applies? %> <% elsif billing.include_tax? %> <p>* Includes <%= billing.tax_name %></p> <% else %> <p>* Excluding <%= billing.tax_name %></p> <% end %> If anyone can point out what I'm doing wrong or what I'm missing or failing to change I would GREATLY appreciate it! Many thanks in advance. Nigel

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  • Podcast client for Symbian [closed]

    - by xain
    Hi,does anybody know a podcast application for the XpressMusic 5800 other than the one that comes with the phone ? The main feature I'm looking for is that it remembers where I stop listening so when I go back to that episode it doesn't start playing it all over again - just like the iPod does.

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  • Automatically enable Xcode "Developer Mode" on computer lab workstations

    - by smokris
    After reimaging a computer lab workstation, the first time a user tries to build and run an Xcode 4 application, Xcode pops up the "Enable 'Developer Mode' on this Mac?" prompt, requesting an administrator password. How can I automate this process (via a script), so that I don't have to go around to every workstation, create a new Xcode project, build and run it, and enter the admin password each time the workstations are reimaged?

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  • Blur a moving area in a movie on Mac OS X

    - by Stefano Borini
    Note, there's already a question on this regard, but it's totally useless. I need to blur, or put a small opaque mask to a moving object on a movie I took, I am using Mac OS X. Clearly, I don't want to shell out a lot of money for something so simple, so getting Adobe Premiere or similar software is a no go. I could however consider paying a small software (max 30 dollars) for this specific task.

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  • File/folder permissions and groups on Linux with Apache

    - by phobia
    I'm trying to learn about permissions on linux webserver with apache. Some clues to the system: The server I have to play around with is Fedora based. Apache runs as apache:apache. To allow for e.g. php to write to a file the file needs to be chmod 777. 755 is not sufficiant. What I'm wondering is basically how set up permissions like they should be on e.g. a "shared web host". My main problem is that if I set a permission so that one user cannot access anothers home folder, then apache can't read from the public_html folder either. To keep the users out I need to set chmod 700. But to let apache to read I need to have at least execute on world, so a 701 basically works, but won't let some users in. So I'm really stuck on what to do. Have been concidering adding the apache user to the frous grours below to avoid having to add the world execute flag, but is that a bad thing? Should it be the other way around, the users in the groups below should also be in the apache group? I was aiming at having 4 groups: 1. webapp same as dev_int, but is the only one that can go inside the webapp/live folder to e.g. do an update from the repo. 2. dev_int can read,write and execute everything in the "web root", including the two below, but nothing outside of the web root 3. dev_ext can read write and execute in all client folders, but cannot access anything outside of the webapp root 4. clientsBasic ftp accounts. Has a home folder with a public_html, but cannot access any other home folders An example of folder structure: webroot    no users in the aforementioned groups can go outside of here some_project    :dev_int only webapp live    :webapp only staging    :dev_int and :dev_ext clients    :dev_int and :dev_ext client_1    :dev_int, :dev_ext and client1:clients public_html dev developer_1    developer_1:dev_int OR :dev_ext public_html

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  • Scoping a home dev server

    - by AbhikRK
    Hi. I’m looking to build a multi-purpose home development server. In this post, I’m looking to outline what I want from such a system, and the ‘why’s of it, to some limited extent, and finally, some rudiments of how I’m looking to go about that. I’m mostly a developer, with just about some sysadmin familiarity. So, please excuse, correct me, and suggest on any ignorance which would come across in the following ;-) It will serve the following goals to start with:- NAS (Looking at using ZFS) Source control repo e.g Git server Database e.g MySQL server Continuous Integration e.g Hudson server Other stuff as and when they come up e.g RabbitMQ etc A development sandbox to play around with new stuff I want to achieve a high uptime for 2-5 as much as possible. They should run as independent services and with minimal maintenance. (e.g TurnKey Linux appliances) I’m thinking of running them as individual Xen DomUs. Then, maybe the NAS can be a Dom0 and 6 can be another DomU. The User for this would be mostly me. I can see 2-4 being sometimes used by 2-3 users, but that would be infrequent. I’m looking for a repeatable setup. Ideally I’d like to automate this setup through Chef or Puppet or something similar. Once everything runs, I want to be able to ssh/screen/tmux into 1-6 from my laptop or any other computer on the LAN/on-the-go. My queries are:- Is putting 1-6, all of them on a single box, a good idea? If so, what kind of hardware should I be looking at, for a low-cost, low-power setup? Although not at present, but in future I might be looking at adding audio/media servers to the mix. Would that impact the answers to 1? I have an old Pentium 3 and 810e motherboard combination. Is there any way I could put it to use? I had a look at the Sheevaplug, and was wondering if I could split off the NAS on its own using that. But ruled it out preliminarily due to its reported heating issues. Is it something i should still consider? Thanks in advance

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